Stop support for list of "take" protocol

[dachengx]

To be compatible with python > 3.9.21

In the actions of #1513, I saw errors like

FAILED tests/test_url_config.py::TestURLConfig::test_json_protocol - ValueError: '1,2,3' does not appear to be an IPv4 or IPv6 address

For python > 3.9.20, the URL should fulfill the test:

Added checks to ensure that [ bracketed ] hosts found by urllib.parse.urlsplit() are of IPv6 or IPvFuture format.

, this was introduced from https://www.python.org/downloads/release/python-3921/.

So "take://json://[1,2,3]?take=0" will not work. But 'take://json://{"a":1}?take=a' still works.

This PR adds a check in "take" protocol to make sure that the container is a dict.

[coveralls]

coverage: 89.49% (+0.02%) from 89.468%
when pulling 1822a4f on take_no_list
into 69265ff on master.